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Random Information
Intermittent No-Start
NOTE: This condition can affect any car with an
immobilizer system, including ’98–99 Accords,
’98–99 Odysseys, and ’97–99 Preludes.
Before you dive into extended diagnostics to
solve an intermittent no-start, find out the customer’s
key ring setup (how many keys, the size of the key
ring, what the key fob’s made of). Under certain
conditions, any combination of too many keys, a large
key ring, and a metal key fob can contribute to an
occasional no-start. Here’s how:
While inserting the key into the ignition switch, the
customer also grabs the metal key fob, the
key ring, or the other keys. Then, with this extra metal
right next to the ignition key, the key is quickly
turned. Metal near the key and a quick turn of the
ignition switch cause interference with the
immobilizer signal, and the car doesn’t start.
Depending on the type of immobilizer system, the
engine won’t crank at all, or it’ll crank without
starting.
Radio Plays With Key OFF
On all models except Passport, the cellular phone battery
can power the radio, even with the ignition switch OFF.
This is because some 12 V phone adapter plugs don’t have
a diode to prevent phone power from going to the radio.
High-quality 12 V adapters have the diode that prevents
this.
Dashboard “Buzz� on
Early 1997 Preludes
On some early-production 1997 Preludes, a buzz from
the right side of the dash may be caused by the A/C
expansion valve tubes rubbing together or touching the
evaporator housing. To verify the noise, test-drive the
car with the glove box open. If the buzz comes from
behind the glove box, here’s what to do.
1. Recover the refrigerant from the A/C system.
2. Remove the evaporator. (Evaporator R & R is in the
1997 Prelude S/M, pages 22-40 and 22-41.)
3. Separate the upper and lower evaporator housings,
and remove the core.
4. Separate the expansion valve tubes 8 mm where they
cross together.
5. Bend the upper tube 10 mm closer to the core to
make clearance between it and the housing.
6. Reinstall the upper and lower housings, reinstall the
evaporator, and recharge the A/C system.
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